Riding when the traffic lights aren't working...
Oakland, CA is already a pretty interesting city to ride in... but when the traffic lights aren't working properly, it really does turn into a free for all! Cars usually stop for other cars, but they surely don't like stopping for cyclists. I luckily only had to ride a few blocks before I was in my town (which had its power still operating normally).
I actually lucked out when a guy who I figured would run me over decided to stop and wave to me as I crossed the street.